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   <h1 class="title">日期与时间相关扩展</h1>
   



 





   

 





  <ul class="chunklist chunklist_set"><li><a href="book.calendar.html">Calendar</a><ul class="chunklist chunklist_set chunklist_children"><li><a href="intro.calendar.html">简介</a></li><li><a href="calendar.setup.html">安装／配置</a></li><li><a href="calendar.constants.html">预定义常量</a></li><li><a href="ref.calendar.html">Calendar 函数</a></li></ul></li><li><a href="book.datetime.html">Date/Time</a> — Date and Time<ul class="chunklist chunklist_set chunklist_children"><li><a href="intro.datetime.html">简介</a></li><li><a href="datetime.setup.html">安装／配置</a></li><li><a href="datetime.constants.html">预定义常量</a></li><li><a href="class.datetime.html">DateTime</a> — The DateTime class</li><li><a href="class.datetimeimmutable.html">DateTimeImmutable</a> — The DateTimeImmutable class</li><li><a href="class.datetimeinterface.html">DateTimeInterface</a> — The DateTimeInterface interface</li><li><a href="class.datetimezone.html">DateTimeZone</a> — The DateTimeZone class</li><li><a href="class.dateinterval.html">DateInterval</a> — The DateInterval class</li><li><a href="class.dateperiod.html">DatePeriod</a> — The DatePeriod class</li><li><a href="ref.datetime.html">Date/Time 函数</a></li><li><a href="datetime.formats.html">Supported Date and Time Formats</a></li><li><a href="timezones.html">所支持的时区列表</a></li></ul></li></ul></div><hr /><div class="manualnavbar" style="text-align: center;">
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